Device for setting the edges of plane-bits



YE. GOWDY.

DEVICE FOR No. 441,758. Patented Dec. 2, 1890.

EDRIOK GOIVDY, OF ANsONIA, CONNECTICUT.

DEVICE FOR SETTING THE EDG ES OF PLANE-BITS.

SPECIFICATIQN forming part of Letters Patent No. 11,758, dated December2, 1890.

Application filed April 10, 1890- $erial No. 347,366. (No model.)

To all whom it may concern.-

' Be it known that I, EDRIOK GownY, a citizen of the United States,residing at Ansonia, in the county of New Haven and State ofConnecticut, have invented certain new and useful Improvements inDevices for Setting the Edges of Plane-Bits and other Tools; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

My invention has for its object the production of a simple andinexpensive device which may be readily carried about in a tool-box, andwhich will act to turn forward slightly the edges of plane-bits andother tools. I have found in practice in planing all classes of wood, itbeing particularly true in the case of knotty close-grained woods, thatby turning forward the edge of the bit of the plane I can secure verymuch better results in the way of a fine smooth finish, avoid all dangerof chipping out, and can retain the plane-bit sharp and in goodcondition for use much longer than when the edge is left to projectdownward in a line with the front of the blade in the usual manner; andin order that I may set the edges of plane-bits without inconvenienceand at any time I have devised the simple and novel tool of which thefollowing description, in connect-ion with the accompanying drawings, isa specification, numbers being used to denote the several parts.

Figure 1 is a perspective of my novel tool, showing also a portion of aplane-bit at the angle at which it is passed over the turning piece;Fig. '2, a longitudinal section of my novel tool, showing theturning-piece in elevation. 'Fig. 3 is an elevation on a greatlyenlargedscale of the lower end of a planebit, showing the edge turned forward asafter it has been acted upon by my novel tool; and Fig. 4 is a sectionsimilar to Fig. 2, showing a slightly-different mode in which I havecarried my invention into effect.

1 denotes a block, preferably made of wood, which is provided with ahole 3, bored into the block from either end near the top of the blockand adapted to receive a round piece of metal 4, which I term aturning-piece. This turning-piece is preferably made of chilled steel,and is made slightly larger than the hole, so as to require to be driventherein and remain firmly wherever it is placed. It will be noticed thathole 3 is made near enough to the top of the block so that the upperportion of the hole is open. This permits the rounded surface of theturning-piece after it is driven in to project slightly above thesurface of the block, as is clearly shown in the drawings. In practice Ipreferably 'drive a plug 2 into the hole after the turning-piece hasbeen driven in and smooth it off level with the top and end of theblock, so as to give a neat finish to the tool. For convenience indriving the turning-piece out, should 1t be required, I preferablyprovide a hole 5, WlllCll extends into hole 3 from the other end of theblock. Should the turning-piece become worn or nicked in use, it mayreadily be driven out, given a partial rotation to place another portionof the rounded surface in operative position, and then driven back toplace and the plug driven in after it.

In use, after sharpening-a plane-bit or other blade, the operator takesthe blade firmly 1n his hand, holding it at about the angle indicated inthe drawings, and passes it backward and forward over the turning-pieceone or more times, as may be required. The action of the portion of theturning-piece lying above the surface of the block will be to turn thecutting-edge forward slightly, as shown 1n Fig. 3. In Fig. 4 I haveshown the block as provided with a transverse undercut groove 7, theundercut side of said groove being the forward side, which is madeperfectly straight, but is inclined downward and inward. The hole toreceive the turning-piece is lower down in the block and is intersectedby the groove, the rounded surface of the turningpiece lying about thesame distance above the bottom of the groove that it does above thesurface of the block in the other form. In using this form the operatorpasses the blade, the edge of which is to be turned through the grooveand over the surface of the turning-piece one or more times in thesamemanner as in using the other form.

I11 order to hold the block firmly in place and make the tool convenientin use, I provide two or more sharpened prongs 6, which project downwardfrom the bottom of the block to engage a work-bench or plank and IOChold the block firmly in place when it is desired to use the tool.

Having thus described my invention, I claim 1. A tool for settingcutting-edges, consisting of a block having a rounded turning-piecedriven therein, the upper portion of which extends slightly above thesurface of theblock, so that a cutting-edge passed over the surface ofthe block will engage the rounded surface of the turning-piece and beturned slightly forward, as and for the purpose set forth.

2. A tool for setting cutting edges, consist in g of ablock having arounded turning-piece driven therein and extending slightly above thesurface thereof, and prongs upon the under side thereof, whereby theblock may be held in place in use.

In testimony whereof I afiix my signature in presence of two Witnesses.

EDRICK GOWDY.

\Vitnesses:

CHAS. S. WEEKS, Mrs. E. GOWDY.

